colboptkra. 135 



Adorium, Fab. — Oides, Web. * 



Those in which the two last joints of the maxillary palpi differ but 

 little as to size, and in which the antennae, composed of cylindrical 

 joints, are at least as long as the body, have been distinguished by the 

 generic name of 



LupERUs, Geoff, f 



The others, which, with similarly terminated palj)!, have shorter 

 antennae, composed of obconical joints, form the true Gallerucae, or 

 the 



Galeruca, Geoff. 

 Such are the 



G. calmariensis ; Chrysomela calmariensis, L. ; Oliv., Col. VI, 

 93, iii, 37. Three lines in length ; yellowish or greenish above ; 

 three black spots on the thorax ; another, with a stripe of the 

 same colour, on each elytron. — This species, together with its 

 larva, is found on the Elm; in certain seasons, when unusually 

 abundant, it strips these trees of their foliage, and does as much 

 mischief as certain caterpillars. 



G. tanaceii ; Chrysomela tanaceli, L. ; Oliv., lb., I, I. Oval, 

 oblong, very black, and but slightly glossy ; elytra deeply punc- 

 tured and without striae. On Tansy :j:. 



The jumping Galerucitae, or those whose posterior thighs are inflated, 

 and which are distributed by Fabricius among the genera Chrysomela, 

 Galeruca, and Crioceris, are united in one, that of Allica or HaUica, 

 in the systems of Geotfroy, Olivier, and lUiger. These Insects are 

 very small, but are ornamented with various or brilliant colours; 

 they jump with great quickness and to a very great height, and fre- 

 quently destroy the leaves of those plants on Avhicli they feed. Their 

 larvae devour the parenchyma, and there undergo their metamorpho- 

 sis. Certain species, those particularly which are commonly termed 

 garden jieas, are very injurious in both states to our kitchen gardens. 

 Of all countries, South America furnishes the greatest number. 

 Illiger, in his Entomol 'ical Magazine, has published an excellent 

 Monograph of these Insects, Avhich he arranges in nine families, and 

 some of which, in our opinion, should form separate subgenera. 

 Those of the subgenus 



OcTOGONOTEs, Drop.^, 



Are removed from all others by the form of their maxillary palpi. 

 As in Adorium, the penultimate joint is thick and turbiniform, and 

 the last very short and truncated; the termination of the labial palpi 

 is acuminate or subulate, as in all the following subgenera; but here 

 the maxillaries are similarly formed, or are also subulate at their ex- 



* Web., Observ. Entom.; Lat., Gener. Crust, et Insect., Ill, p. 60, and I, xi, 9 • 

 Oliv., Col., V, 92, bis ; Schoenh., lb., II, p. 230 ; Fab., Syst. Eleut. ' 



t Oliv., Col., IV, 76, bis; Schoenh., lb., p. 292, 294 ; Germ. Insect. Spec. Nov., 

 p. 598. 



X See Oliv., Col., lb, 



§ Aun. des Sc. Phys., Ill, p. I8I. 



